222110066661 has 8 divisors (see below), whose sum is σ = 338453434944. Its totient is φ = 126920038080.

The previous prime is 222110066657. The next prime is 222110066687. The reversal of 222110066661 is 166660011222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 222110066661 - 2² = 222110066657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222110061661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5288334900 + ... + 5288334941.

It is an arithmetic number, because the mean of its divisors is an integer number (42306679368).

Almost surely, 2^222110066661 is an apocalyptic number.

222110066661 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222110066661 is a deficient number, since it is larger than the sum of its proper divisors (116343368283).

222110066661 is a wasteful number, since it uses less digits than its factorization.

222110066661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10576669851.

The product of its (nonzero) digits is 10368, while the sum is 33.

Adding to 222110066661 its reverse (166660011222), we get a palindrome (388770077883).

The spelling of 222110066661 in words is "two hundred twenty-two billion, one hundred ten million, sixty-six thousand, six hundred sixty-one".